文献类型：期刊文献

英文题名：The distribution and seasonal variations of sedimentary organic matter in the East China Sea shelf

作者：Zhou, Fengxia[1,2];Gao, Xuelu[1,3];Yuan, Huamao[3,4,5];Song, Jinming[3,4,5];Chen, Fajin[2]

机构：[1]Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China;[2]Guangdong Ocean Univ, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang 524088, Guangdong, Peoples R China;[3]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[4]Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China;[5]Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Ecol & Environm Sci, Qingdao 266237, Shandong, Peoples R China

年份：2018

卷号：129

期号：1

起止页码：163

外文期刊名：MARINE POLLUTION BULLETIN

收录：SCI-EXPANDED(收录号：WOS:000433401600020)、、EI(收录号：20181304955521)、Scopus(收录号：2-s2.0-85044352157)、WOS

基金：This study was financially supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA11020102), the National Natural Science Foundation of China-Shandong Province Joint Fund for Marine Ecology and Environmental Sciences (U1606404) and the National Key Research and Development Plan - Sino-Australian Centre for Healthy Coasts (2016YFE0101500). The assistance of Baoxiao Qu, Changfeng Qu, Qidong Wang and Jiulong Zuo in the sample collection is greatly appreciated.

语种：英文

外文关键词：East China Sea shelf; Stable carbon and nitrogen isotopes; Spatial and temporal distribution; Sedimentary organic matter

外文摘要：We sampled the surface sediments of the East China Sea shelf (ECSS) in spring and autumn, 2014, and analyzed the biogenic element concentrations and stable carbon (delta C-13) and nitrogen (delta N-15) isotopic compositions to study the distribution and seasonal variations of sedimentary organic matter (OM). The average concentrations of TOC, TN and OP in autumn decreased obviously compared with those in spring. The increase of delta N-15 values in autumn indicated the priority utilization of N-14 by bacterial decomposition activity. The values of delta C-13 were used to trace organic matter sources. The estimated percentages for terrestrial OM were in the range of 0-34.6%. They generally decreased seaward in nearshore areas, indicating the decrease of terrigenous influence. There was an obvious tongue-shaped region with relatively low percentages of terrestrial OM (< 12%) in the northern part of the ECSS, which may be a reflection of the intrusion pathway of the outer seawater.